Clematis napaulensis

RHS Plant Profile
Nepal clematis

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Nepal clematis RHS
Nepal clematis RHS
Nepal clematis RHS

Synonyms

Clematis forrestii

Climber Wall Shrub
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A climbing species with bright green leaves divided into three or five leaflets and are rather unusually shed for a period of summer dormancy. Clusters of creamy-white, nodding flowers less than 2.5cm long, are distinguished by the very long stamens with striking purple-red anthers, are produced in early winter, then large and fluffy seedheads follow

Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Max Height

2.5-4 metres

Max Spread

1-1.5 metres

Size

Time to Maturity
2–5 years
Max Spread
1-1.5 metres
Max Height
2.5-4 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
South–facing
Exposure
Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H3

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Ranunculaceae
Native to GB/Ireland
No
Foliage
Semi evergreen
Habit
Climbing
Potentially harmful
Skin irritant. Wear gloves and other protective equipment when handling. Pets (rabbits): Harmful if eaten. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus
Clematis can be deciduous or evergreen shrubs or herbaceous perennials, mostly climbing by twining leaf-stalks, and often with showy flowers. Some have attractive fluffy seedheads in autumn
Name Status
Correct
Plant Range
N India, SW China

How to Grow

Cultivation

Best planted against a warm, sheltered, south-facing wall in moisture-retentive, well-drained soil with the crown 5-8cm (2-3in) deep to encourage new shoots to grow from below ground level. Choose site carefully as this clematis is summer dormant and will die down during the summer months. See clematis cultivation for more advice

Propagation

Propagate by layering or semi-hardwood cuttings

Suggested planting locations and garden types

  • Wall side borders

Pruning

Pruning (clematis) group 1

Pests

May be susceptible to aphids, snails and caterpillars; petals may be eaten by earwigs

Diseases

May be susceptible to honey fungus (rarely), clematis wilt and clematis slime flux